Which of the following parameters are involved in the election of the master switch in the stack? (Multiple choice)

Question

Options

• AMAC address
• BStack-ID status
• CStack ID
• DRunning priority

• A
  77% (33)
• C
  9% (4)
• D
  14% (6)

Explanation

In switch stack master election, MAC address (A) acts as a hardware-based, globally unique tiebreaker that guarantees a deterministic outcome when other criteria are equal, while Stack-ID status (B) reflects whether a switch previously held the master role - giving precedence to the incumbent master promotes network stability and reduces unnecessary re-elections.

Stack ID (C) is incorrect because it is simply a logical slot identifier assigned to each stack member for addressing purposes; it is not weighted as an election criterion in the comparison algorithm. Running priority (D) is a distractor - while "configured priority" is a real election parameter in some stacking implementations, "running priority" as a distinct selectable option is not a defined parameter in the master election process covered by this exam objective.

Memory tip: Think "M-S" - MAC address and Status (Stack-ID status) are the two hardware/history-based factors the stack uses to pick its master; the logical ID number and runtime metrics are not part of the election formula.

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